TPC Mechatronics RSFNU Series Ball Screw Nut (NU-Type, Single Flanged)

The RSFNU Series is a precision ball screw nut line from TPC Mechatronics: NU-type single flanged nut with internal ball circulation, shaft diameters 12-80 mm.

Key features

Ball screws convert rotary motion into linear motion with high efficiency, reversibility and high positioning precision
Internal ball circulation keeps the nut outer diameter small
Shafts are available ground or rolled in accuracy grades C0 to C10 with selectable axial clearance/preload (P0-P4) and surface treatments
The table lists ball diameter, root diameter, basic dynamic and static load ratings, rigidity and main nut dimensions for each model

Specifications

Thread direction	Right

RSFNUR1204-3		Shaft dia. d: 12 mm \| Lead: 4 mm \| Ball dia.: 2.5 mm \| Dynamic load Ca: 678 kgf \| Static load Coa: 1321 kgf \| Rigidity K: 20 kgf/μm \| Nut dia. D: 24 mm \| Flange dia. A: 40 mm \| Nut length L: 35 mm \| Circuits: 3×1 \| Thread direction: Right
RSFNUR1204-4		Shaft dia. d: 12 mm \| Lead: 4 mm \| Ball dia.: 2.5 mm \| Dynamic load Ca: 869 kgf \| Static load Coa: 1761 kgf \| Rigidity K: 26 kgf/μm \| Nut dia. D: 24 mm \| Flange dia. A: 40 mm \| Nut length L: 40 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR1604-4		Shaft dia. d: 16 mm \| Lead: 4 mm \| Ball dia.: 2.381 mm \| Dynamic load Ca: 974 kgf \| Static load Coa: 2408 kgf \| Rigidity K: 32 kgf/μm \| Nut dia. D: 28 mm \| Flange dia. A: 48 mm \| Nut length L: 40 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR1605-3		Shaft dia. d: 16 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1078 kgf \| Static load Coa: 2291 kgf \| Rigidity K: 25 kgf/μm \| Nut dia. D: 28 mm \| Flange dia. A: 48 mm \| Nut length L: 42 mm \| Circuits: 3×1 \| Thread direction: Right
RSFNUR1605-4		Shaft dia. d: 16 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1381 kgf \| Static load Coa: 3055 kgf \| Rigidity K: 33 kgf/μm \| Nut dia. D: 28 mm \| Flange dia. A: 48 mm \| Nut length L: 45 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR1610-3		Shaft dia. d: 16 mm \| Lead: 10 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1104 kgf \| Static load Coa: 2404 kgf \| Rigidity K: 27 kgf/μm \| Nut dia. D: 28 mm \| Flange dia. A: 48 mm \| Nut length L: 57 mm \| Circuits: 3×1 \| Thread direction: Right
RSFNUR2004-3		Shaft dia. d: 20 mm \| Lead: 4 mm \| Ball dia.: 2.381 mm \| Dynamic load Ca: 833 kgf \| Static load Coa: 2242 kgf \| Rigidity K: 28 kgf/μm \| Nut dia. D: 36 mm \| Flange dia. A: 58 mm \| Nut length L: 42 mm \| Circuits: 3×1 \| Thread direction: Right
RSFNUR2005-3		Shaft dia. d: 20 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1212 kgf \| Static load Coa: 2909 kgf \| Rigidity K: 29 kgf/μm \| Nut dia. D: 36 mm \| Flange dia. A: 58 mm \| Nut length L: 42 mm \| Circuits: 3×1 \| Thread direction: Right
RSFNUR2005-4		Shaft dia. d: 20 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1552 kgf \| Static load Coa: 3879 kgf \| Rigidity K: 39 kgf/μm \| Nut dia. D: 36 mm \| Flange dia. A: 58 mm \| Nut length L: 51 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR2504-4		Shaft dia. d: 25 mm \| Lead: 4 mm \| Ball dia.: 2.381 mm \| Dynamic load Ca: 1181 kgf \| Static load Coa: 3799 kgf \| Rigidity K: 43 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 42 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR2505-3		Shaft dia. d: 25 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1348 kgf \| Static load Coa: 3681 kgf \| Rigidity K: 34 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 42 mm \| Circuits: 3×1 \| Thread direction: Right
RSFNUR2505-4		Shaft dia. d: 25 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1726 kgf \| Static load Coa: 4909 kgf \| Rigidity K: 45 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 51 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR2510-3		Shaft dia. d: 25 mm \| Lead: 10 mm \| Ball dia.: 4.762 mm \| Dynamic load Ca: 2309 kgf \| Static load Coa: 5477 kgf \| Rigidity K: 38 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 70 mm \| Circuits: 3×1 \| Thread direction: Right
RSFNUR2510-4		Shaft dia. d: 25 mm \| Lead: 10 mm \| Ball dia.: 4.762 mm \| Dynamic load Ca: 2957 kgf \| Static load Coa: 7302 kgf \| Rigidity K: 50 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 80 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR3205-4		Shaft dia. d: 32 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1924 kgf \| Static load Coa: 6350 kgf \| Rigidity K: 53 kgf/μm \| Nut dia. D: 50 mm \| Flange dia. A: 80 mm \| Nut length L: 52 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR3210-3		Shaft dia. d: 32 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 3755 kgf \| Static load Coa: 9165 kgf \| Rigidity K: 47 kgf/μm \| Nut dia. D: 50 mm \| Flange dia. A: 80 mm \| Nut length L: 74 mm \| Circuits: 3×1 \| Thread direction: Right
RSFNUR3210-4		Shaft dia. d: 32 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 4810 kgf \| Static load Coa: 12220 kgf \| Rigidity K: 62 kgf/μm \| Nut dia. D: 50 mm \| Flange dia. A: 80 mm \| Nut length L: 85 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR4005-4		Shaft dia. d: 40 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 2112 kgf \| Static load Coa: 7996 kgf \| Rigidity K: 62 kgf/μm \| Nut dia. D: 63 mm \| Flange dia. A: 93 mm \| Nut length L: 55 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR4010-3		Shaft dia. d: 40 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 4220 kgf \| Static load Coa: 11637 kgf \| Rigidity K: 55 kgf/μm \| Nut dia. D: 63 mm \| Flange dia. A: 93 mm \| Nut length L: 71 mm \| Circuits: 3×1 \| Thread direction: Right
RSFNUR4010-4		Shaft dia. d: 40 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 5405 kgf \| Static load Coa: 15516 kgf \| Rigidity K: 72 kgf/μm \| Nut dia. D: 63 mm \| Flange dia. A: 93 mm \| Nut length L: 88 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR5010-4		Shaft dia. d: 50 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 6010 kgf \| Static load Coa: 19634 kgf \| Rigidity K: 84 kgf/μm \| Nut dia. D: 75 mm \| Flange dia. A: 110 mm \| Nut length L: 88 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR6310-4		Shaft dia. d: 63 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 6726 kgf \| Static load Coa: 25384 kgf \| Rigidity K: 99 kgf/μm \| Nut dia. D: 90 mm \| Flange dia. A: 125 mm \| Nut length L: 93 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR6320-4		Shaft dia. d: 63 mm \| Lead: 20 mm \| Ball dia.: 9.525 mm \| Dynamic load Ca: 11746 kgf \| Static load Coa: 38517 kgf \| Rigidity K: 114 kgf/μm \| Nut dia. D: 95 mm \| Flange dia. A: 135 mm \| Nut length L: 149 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR8010-4		Shaft dia. d: 80 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 7353 kgf \| Static load Coa: 31986 kgf \| Rigidity K: 111 kgf/μm \| Nut dia. D: 105 mm \| Flange dia. A: 145 mm \| Nut length L: 98 mm \| Circuits: 4×1 \| Thread direction: Right
RSFNUR8020-4		Shaft dia. d: 80 mm \| Lead: 20 mm \| Ball dia.: 9.525 mm \| Dynamic load Ca: 12924 kgf \| Static load Coa: 47796 kgf \| Rigidity K: 135 kgf/μm \| Nut dia. D: 125 mm \| Flange dia. A: 165 mm \| Nut length L: 143 mm \| Circuits: 4×1 \| Thread direction: Right

Ball ScrewsTPC Mechatronics

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TPC Mechatronics RSFNU Series Ball Screw Nut (NU-Type, Single Flanged)

Brand TPC Mechatronics·Ball Screws

Available part numbers (25)

RSFNUR1204-3, RSFNUR1204-4, RSFNUR1604-4, RSFNUR1605-3, RSFNUR1605-4, RSFNUR1610-3, RSFNUR2004-3, RSFNUR2005-3, RSFNUR2005-4, RSFNUR2504-4 + 15 more — see full table ↓

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Product codes & specifications

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	Product code	Spec
	RSFNUR1204-3	Shaft dia. d: 12 mm \| Lead: 4 mm \| Ball dia.: 2.5 mm \| Dynamic load Ca: 678 kgf \| Static load Coa: 1321 kgf \| Rigidity K: 20 kgf/μm \| Nut dia. D: 24 mm \| Flange dia. A: 40 mm \| Nut length L: 35 mm \| Circuits: 3×1 \| Thread direction: Right
	RSFNUR1204-4	Shaft dia. d: 12 mm \| Lead: 4 mm \| Ball dia.: 2.5 mm \| Dynamic load Ca: 869 kgf \| Static load Coa: 1761 kgf \| Rigidity K: 26 kgf/μm \| Nut dia. D: 24 mm \| Flange dia. A: 40 mm \| Nut length L: 40 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR1604-4	Shaft dia. d: 16 mm \| Lead: 4 mm \| Ball dia.: 2.381 mm \| Dynamic load Ca: 974 kgf \| Static load Coa: 2408 kgf \| Rigidity K: 32 kgf/μm \| Nut dia. D: 28 mm \| Flange dia. A: 48 mm \| Nut length L: 40 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR1605-3	Shaft dia. d: 16 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1078 kgf \| Static load Coa: 2291 kgf \| Rigidity K: 25 kgf/μm \| Nut dia. D: 28 mm \| Flange dia. A: 48 mm \| Nut length L: 42 mm \| Circuits: 3×1 \| Thread direction: Right
	RSFNUR1605-4	Shaft dia. d: 16 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1381 kgf \| Static load Coa: 3055 kgf \| Rigidity K: 33 kgf/μm \| Nut dia. D: 28 mm \| Flange dia. A: 48 mm \| Nut length L: 45 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR1610-3	Shaft dia. d: 16 mm \| Lead: 10 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1104 kgf \| Static load Coa: 2404 kgf \| Rigidity K: 27 kgf/μm \| Nut dia. D: 28 mm \| Flange dia. A: 48 mm \| Nut length L: 57 mm \| Circuits: 3×1 \| Thread direction: Right
	RSFNUR2004-3	Shaft dia. d: 20 mm \| Lead: 4 mm \| Ball dia.: 2.381 mm \| Dynamic load Ca: 833 kgf \| Static load Coa: 2242 kgf \| Rigidity K: 28 kgf/μm \| Nut dia. D: 36 mm \| Flange dia. A: 58 mm \| Nut length L: 42 mm \| Circuits: 3×1 \| Thread direction: Right
	RSFNUR2005-3	Shaft dia. d: 20 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1212 kgf \| Static load Coa: 2909 kgf \| Rigidity K: 29 kgf/μm \| Nut dia. D: 36 mm \| Flange dia. A: 58 mm \| Nut length L: 42 mm \| Circuits: 3×1 \| Thread direction: Right
	RSFNUR2005-4	Shaft dia. d: 20 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1552 kgf \| Static load Coa: 3879 kgf \| Rigidity K: 39 kgf/μm \| Nut dia. D: 36 mm \| Flange dia. A: 58 mm \| Nut length L: 51 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR2504-4	Shaft dia. d: 25 mm \| Lead: 4 mm \| Ball dia.: 2.381 mm \| Dynamic load Ca: 1181 kgf \| Static load Coa: 3799 kgf \| Rigidity K: 43 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 42 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR2505-3	Shaft dia. d: 25 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1348 kgf \| Static load Coa: 3681 kgf \| Rigidity K: 34 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 42 mm \| Circuits: 3×1 \| Thread direction: Right
	RSFNUR2505-4	Shaft dia. d: 25 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1726 kgf \| Static load Coa: 4909 kgf \| Rigidity K: 45 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 51 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR2510-3	Shaft dia. d: 25 mm \| Lead: 10 mm \| Ball dia.: 4.762 mm \| Dynamic load Ca: 2309 kgf \| Static load Coa: 5477 kgf \| Rigidity K: 38 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 70 mm \| Circuits: 3×1 \| Thread direction: Right
	RSFNUR2510-4	Shaft dia. d: 25 mm \| Lead: 10 mm \| Ball dia.: 4.762 mm \| Dynamic load Ca: 2957 kgf \| Static load Coa: 7302 kgf \| Rigidity K: 50 kgf/μm \| Nut dia. D: 40 mm \| Flange dia. A: 62 mm \| Nut length L: 80 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR3205-4	Shaft dia. d: 32 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 1924 kgf \| Static load Coa: 6350 kgf \| Rigidity K: 53 kgf/μm \| Nut dia. D: 50 mm \| Flange dia. A: 80 mm \| Nut length L: 52 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR3210-3	Shaft dia. d: 32 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 3755 kgf \| Static load Coa: 9165 kgf \| Rigidity K: 47 kgf/μm \| Nut dia. D: 50 mm \| Flange dia. A: 80 mm \| Nut length L: 74 mm \| Circuits: 3×1 \| Thread direction: Right
	RSFNUR3210-4	Shaft dia. d: 32 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 4810 kgf \| Static load Coa: 12220 kgf \| Rigidity K: 62 kgf/μm \| Nut dia. D: 50 mm \| Flange dia. A: 80 mm \| Nut length L: 85 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR4005-4	Shaft dia. d: 40 mm \| Lead: 5 mm \| Ball dia.: 3.175 mm \| Dynamic load Ca: 2112 kgf \| Static load Coa: 7996 kgf \| Rigidity K: 62 kgf/μm \| Nut dia. D: 63 mm \| Flange dia. A: 93 mm \| Nut length L: 55 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR4010-3	Shaft dia. d: 40 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 4220 kgf \| Static load Coa: 11637 kgf \| Rigidity K: 55 kgf/μm \| Nut dia. D: 63 mm \| Flange dia. A: 93 mm \| Nut length L: 71 mm \| Circuits: 3×1 \| Thread direction: Right
	RSFNUR4010-4	Shaft dia. d: 40 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 5405 kgf \| Static load Coa: 15516 kgf \| Rigidity K: 72 kgf/μm \| Nut dia. D: 63 mm \| Flange dia. A: 93 mm \| Nut length L: 88 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR5010-4	Shaft dia. d: 50 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 6010 kgf \| Static load Coa: 19634 kgf \| Rigidity K: 84 kgf/μm \| Nut dia. D: 75 mm \| Flange dia. A: 110 mm \| Nut length L: 88 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR6310-4	Shaft dia. d: 63 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 6726 kgf \| Static load Coa: 25384 kgf \| Rigidity K: 99 kgf/μm \| Nut dia. D: 90 mm \| Flange dia. A: 125 mm \| Nut length L: 93 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR6320-4	Shaft dia. d: 63 mm \| Lead: 20 mm \| Ball dia.: 9.525 mm \| Dynamic load Ca: 11746 kgf \| Static load Coa: 38517 kgf \| Rigidity K: 114 kgf/μm \| Nut dia. D: 95 mm \| Flange dia. A: 135 mm \| Nut length L: 149 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR8010-4	Shaft dia. d: 80 mm \| Lead: 10 mm \| Ball dia.: 6.35 mm \| Dynamic load Ca: 7353 kgf \| Static load Coa: 31986 kgf \| Rigidity K: 111 kgf/μm \| Nut dia. D: 105 mm \| Flange dia. A: 145 mm \| Nut length L: 98 mm \| Circuits: 4×1 \| Thread direction: Right
	RSFNUR8020-4	Shaft dia. d: 80 mm \| Lead: 20 mm \| Ball dia.: 9.525 mm \| Dynamic load Ca: 12924 kgf \| Static load Coa: 47796 kgf \| Rigidity K: 135 kgf/μm \| Nut dia. D: 125 mm \| Flange dia. A: 165 mm \| Nut length L: 143 mm \| Circuits: 4×1 \| Thread direction: Right

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TPC Mechatronics RSFNU Series Ball Screw Nut (NU-Type, Single Flanged)